The Indian Institute of Technology (IIT) Guwahati, India, and Imperial College London, United Kingdom, have developed nanoparticles the ‘meta-grid’ or ‘meta - material grid’ that makes the light-emitting diodes (LED) brighter, energy-efficient and durable.
Meta-grid is a specifically patterned array of nanoparticles acting as meta-materials and it is capable of exhibiting extraordinary optical properties.
The nanoparticle ‘meta-grid’ enhances the light extraction and provides a wider range of optical gadgets.
The ‘meta-grid’ can be used as drying-mediated self-assembly of nanoparticles made of silver or alternative less-lossy plasmonic materials capped with appropriate ligands, to form free-standing the Sikdar–Premaratne–Cheng ‘plasmene’ sheets.
These monolayer sheets can be stretched for precise tuning of the plasmene’s substrate.
The LED-chip encapsulation may include higher refractive index glasses or epoxy materials incorporated with filler powders or nanoparticle-loaded-epoxy or engineered epoxy resins.
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